How many chromosomes are typically present in human cells?
A. 20 pairs for a total of 40 chromosomes
B. 21 pairs for a total of 42 chromosomes
C. 22 pairs for a total of 44 chromosomes
D. 23 pairs for a total of 46 chromosomes
Answer: D
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Researchers estimate that anxious/fearful personality disorders occur in % of the general population
a. 5 b. 2.3 c. 9 d. 23
Despite the limitations of survey questionnaires, they can be especially informative
A. if they are done year after year, because we can then look for changes over time. B. about use among those who are not included in the survey. C. about alcohol use, because it is not illegal. D. about misuse of prescription drugs.
An Apgar score of __________ indicates a life-threatening situation that requires emergency care
a. 3 or less c. 7 to 10 b. 4 to 6 d. 11 to 14
Describe community-based action research, and outline one challenge associated with this approach.
What will be an ideal response?